Perhaps you are a little bit more optimistic, a little bit more utopian-- human nature can be improved.

也许你更乐观，更加乐天，人性可以改善。

哈佛公开课 - 幸福课课程节选

What do you think is one thing that should be improved in London?

你觉得伦敦在哪个地方还需要改进？

伦敦的现代化 - SpeakingMax英语口语达人

It might be improved by presenting other views better and more objectively, since Kagan always ended a particular line of reasoning by defeating the argument if he didn't agree with it.

讲课效果会提升如果更好的,并更客观的展示其他观点，因为卡刚通常通过击败一个论点,来结束特定的推理，如果他不同意它。

耶鲁公开课 - 死亡课程节选